Expired, full termArchive
Data processor and single-chip microcomputer with changing clock frequency and operating voltage
US 5,778,237 A · Assignee: Hitachi, Ltd. · Inventors: Yamamoto; Mitsuyoshi et al.
Overview
32 drawing sheets
Every sheet is in the USPTO PDF.
Open the USPTO PDFRead the whole patent
Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 14, 1995. A US utility patent lasts 20 years from filing, so its term ended December 14, 2015.
- Patents filed before May 29, 2000 can't get a term adjustment for USPTO delays, and any other extension is capped at five years, so it can't still be in force.
- We haven't checked its US family, and a later related patent could still be in force. We check US rights only.
FiledDecember 14, 1995
GrantedJuly 7, 1998
Term endedDecember 14, 2015
Application number08/572677
Classification (CPC)G06F1/324 +2 more
Length53 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.